Fluid speed-governing clutch.



PATENTBD N0v.'20, 1906.

J. G. WANDS. FLUID SPEED GOVERNINGOLUTCH.

APPLICATION FILED MAY 21 1906.

3 SHEETS-SHEET 1 Wihnessaa PATENTED NOV. 20, 1906' J. C. WANDS. FLUID SPEED GOVERNING OLUTGI-L.

APPLICATION FILED MAY 21. 1906 3 SHEETS-SHEET 2.

PATENTED NOV. 20, 1905.

J. G. WANDS. v FLUID SPEED GOVERNING CLUTCH.

APPLICATION FILED MAY 21. 1906.

3 SHEETS-SHBET 3.

Fig.

m wow 0 H. Rd A x m Q M h 0 9 b Witnesses I UNITED STATES PATENT OFFICE.

JOHN C. WAN-D8, OF ST. L ()-UIS, MISSOURI.

F-LUlD SPEEID GOVERNlNG CLUTCH.

Specification of Letters Patent.

Patented Nov. 20, 1906.

Application filed May 21 1906. Serial No. 317,946.-

pertains to make and use the same, reference being had to the a-ccom )anying drawings, forming part of this speci ication, in which Figure 1 is a longitudinal sectional view through a fluid speed-governing clutch em bodying the features of my invention; Fig. 2 is a sectional view taken on the 'linefi 2 of Fig. 1. Fig. 3 is an end vieu looking from the righthand side of Fig. 1. F t is a detail view, partly in section, of the skeletonlike sleeve on which the piston is mounted; and Fig. 5 is an end view showing a pulley connected to the cylinder in which the piston is mounted..\

This invention relates to fluid speed-gov erning clutchesada ted to be arranged between driving and riven members for controlling the speed of the driven member; and the object of my invention is to provide a clutcl. of the character referred to, which is of simple construction. The driving member has a piston connected thereto in such manner that said piston is capable of reciprocal.- ing longitudinally of said driving member, such reciprocating movement resulting from the rotary movement of said driving member. The cylinder or casing in which the piston is mounted is filled with fluid, preferably oil, and

is connected. to the driven member, and means is provided for regulating the passage of the fluid to andfrom the opposite sides of the piston through suitable by-pas'ses. Thus if the by-passes for the fluid are cl osed or choked the piston will not move freely in its cylinder, and consequently the rotary motion of the driving member will be communicated to the driven member to which the cylinder-casing 1s attached,.sa1d casing being provided with inwardly-disposed projections which cooperate with a cam on the piston. The relative speed of the driven member is proportionate to the freedom of movement of the piston. When the by-passes are entirely closed, the fluid cannot escape from the front side of the l valve 18 as being piston, and consequently the piston cannot reciprocate, so that the driven member will be positively connected to the driving member and will be rotated at the same speed. When the by-passes are fully opened, the driven member, if it has a load imposed thereon, will remain stationary while the driving member is rotating at full speed, due

to the fact that the fluid can escape from the front side of the pistonto-the rear side thereof througlrsaid by-passesl' Referring to the drawings, which represent the preferred form of my invention, 1 designates the driving member, herein shown as a shaft which receives motion from any suitable source of power, and 2 is the driven member, also shown as a shaft. A sleeve 3 is mounted on the end of the shaft 1, said sleeve having inwardly-projecting arms 4, which engage the shaft 1, keys 5 being pro vidcd for rigidly connecting said sleeve and shaft together. A piston 6, provided with a cam 7, is mounted on this sleeve, and a key 8 is provided for connecting the piston to the sleeve, whereby said piston is adapted to move longitudinally thereof. The extreme end of the drivin shaft extends into a recess formed in a heao casting 9, provided with a sleeve 10, to which the driven shaft 2 is connected by means of a pin 11. The cylinder in whichthe piston opcrates is connected to the head-casting S by means of screw-threads and also rivets 13,- as shown in Fig. 3, the opposite end of said cylinder being mounted on the driving-shaft l and being rovided with a stuffing-box 14 through which said shaft extends. .lligid projections or pins 15 extend inwardly from the cylinder and cooperate with the cam 7,

formed on the piston, the cylinder being filled with some fluid, preferably oil. The sleeve 3 is provided at its opposite ends with ports 16 and 17, and the spaces between the inwardly-extcnding arms 4of said sleeve form by-passes through which the fluid can flow as it is displaced by the reciprocation of the piston in the cyliud er. The valve 18, which, may be in the form of a ring, surrounds the sleeve 3 and cont rols the I'HISSHQO of the fluid through the ports 17, said valve being reciprocated longitudinally of the sleeve-3 by any suitable means. I have herein shown said carried bv ins 19, projecti to escape 'from the 'front'of the ing from a grooved collar 20, which may be positively actuated by a lever or similar device, said-pins extending through stuffingboxes 21 in the head-casting 9.

5 In operation if, the drivenshaftZ isloaded and the ports 17 in the sleeve 3 are fully o ned it will be obvious that the rotation o the driving-shaft will cause the piston to reciprocate in its cylinder and force the liquid from the front of the piston through said pom-*to, the'by-passes on the interior of'thethe-samespeed. The gradual opening of the orts 17 will remove the restrictions upon rhea-flow oftheli'quid from one end of the piston-cylinder tothe other and will permit said- E'iston to reciprocate slightly onshaft 1 ifllic iresults-in' a corresponding loss of speed 30 inf shafit 2, this continuing until the valve collar l'8 i'isifnllyopened, when ifshaf-t 2 is carrying a load sufiicient to overcome the friction of" the piston in its cylinder said shai t will "b'e'broughttorest while-shaft-l 3S. continues torotate; the piston reciprocating idlfibaek and forth in the cylinder. 7

rFig. 5'I have shown the cylinder 12 as having the arms 22 'of-a pulley23 cast integrail therewith, or, if desired, the hub of a gulls? could be connected to the cylinden 1 e 1 havesh'own the sleeve 3 as being fbmed-separate'from the-shaft 1 and being connected thereto bykeys; it should be understood that these'parts could be made integral-without departing-from the spirit or see eofimy in ventiona Irvingth described myinv'ention, what L'claim' as new; and desire" tosecure by' Letsaid cylinder cooperating with an irregular surface onthe piston, and acollar reciprocat- 1% -The-combinationlwi-th a driving; mem=- dia driven -member, of-a piston' mounted 'on t-lie driving. member-and adapted to -'cyliridel -"conneeted to the drivenmember and 5 5 adapiedate recei'vg'e a fiuid", means for reciprocatfiigsaid piston; a by-pa'ss'arranged adjacent theaxisofi'tliepiston to provide "a pas sage from OIIGsSid of 'fthe' istorr to its 'other' side, and'-means-for 'regn ating the flow-10f reeii ecawlon au'dinaliy thereof," a piston cylinder connected to the driving member and adapted to receive a fluid, a rigid member projecting inwardly from said cylinder and cooperating with an irregular surface on the piston, a by-pass arranged adjacent the axis-of'the piston to provide a passage from one side of the piston to its other side, and means for regulating the flow of'liquid through said by-pass; substantiallyas described.

3'. The combination with a driving member and a driven member, ofa piston-mounted on the driving member'and adapted to reciprocate longitudinally thereof, a cam onsaid piston, a piston-cylinderconnected to the driven member, and adapted to receive a fluid, rigid projections extending inwardly from; the cylinder and cooperating with the camon the piston, a by-pass arranged adj acent the axis of the piston to provide a passag'e way from oneend of the cylinder to the other end thereof, and means for regulating the flow of liquid through said by-pass; substantially as described.

4'. The combination with a driving member and adriven member, asleeveon the driving member having a by-pass formed on the interior thereof, ports in the outer face ofsaid sleeve arranged at the'ends of said bypass, a piston reciprocatingly mounted on said sleeve, a cylinder connected to the driven member and adapted to receive afluid," an inwardly-extending projection on said cylinder cooperating with an irregular surface on the piston, and means for regulating the flow of liquid through said by-pass; substantially as described.

5. The combination with a driving member and a driven member, a sleeve on the driving member having a by-pass formed on the interior-thereof, ports in the outer faceof said sleeve arranged at the,ends'of said bypass, apiston reciprocatingly mounted on said sleeve, acylinder connected to the driven member and ada ted to receive a fluid, an iuwardly-exten ing projection'on ingly mounted on said sleeve for closmg'one ofthe' ports therein to regulate theflo'w-of. liquid through said by-pass substantially as described.

6; The combination with a driving memberand adri'ven member, a sleeve carried by said driving member and provided with-aplurality of longitudinally-extending spaces arranged inside said sleeve, ports-formed the outersurface of said sleeve at the opposite endsmf saidsp'aces, a piston reciprocatingly mounted on said sleeve and provided IIO with a cam, a piston-cylinder connected to signature, in the presence of two witnesses, the driven member and adapted to containu this 19th day of May, 1906.' fluid, ul 1 ralve fer closing the port-s lt; (me JOHN (L WANDa end of said blGQX'G for regulat ng the flow ol- 5 liquid through the 5}):1068 outlier interior of \Yitnesses:

the sleeve; substantially as described. W LLS L. CHURCH,

In testiinonv whereof I hereunto z-LlllX my i URGE BAKEWELL. 

